Lawyers for State Senate co-presidents Jeff Klein and Dean Skelos along with Assembly Speaker Sheldon Silver have pushed to be “intervenor” plaintiffs, effectively joining a half-dozen private law firms that employ lawmakers as those firms challenge the commission's subpoenas for client lists and invoices.

“Unfortunately, there have been a number of public corruption cases over the past several years. This petition does not intend to shield any wrongdoers—in fact, there are no allegations of wrongful conduct behind any of the Subpoenas,” attorneys Michael Garcia, Marc Kasowitz and Jay Musoff wrote in papers filed on Wednesday. “Rather, this petition seeks to protect the Legislature by preserving its vital role as a co-equal branch of the New York State government.”